The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 29, 1990
Filed:
Apr. 07, 1989
Applicant:
Inventors:
Noriaki Kohtoh, Ichihara, JP;
Yoshihiro Tsuruoka, Ichihara, JP;
Toyohiko Abe, Ichihara, JP;
Hiroyoshi Fukuro, Ichihara, JP;
Assignee:
Nissan Chemical Industries Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
C08K / ;
U.S. Cl.
CPC ...
524219 ; 430 20 ;
Abstract
This invention is concerned with a composition to be used as an agent for aligning liquid crystals in a liquid crystal cell, wherein liquid crystal molecules are aligned with an increased pretilt angle with respect to the substrate, such composition consists essentially of a polyimide resin precursor having repeating units represented by the formula (I) ##STR1## wherein R.sub.1 denotes an organic group constituting a tetracarboxylic acid or its derivative; and R.sub.2 represents a divalent organic group constituting a diamine; and